Chelsea interim manager Guus Hiddink says new signings Alexandre Pato and Matt Miazga will add depth to his squad.
The former AC Milan striker is set to sign on loan from Brazilian club Corinthians until the end of the season.
Miazga is expected to join from New York Red Bulls for an estimated fee of £3.5m.
"Pato's loan is at the paperwork stage," Hiddink revealed.
"It is not a gamble. Coming on loan makes it possible to have a good view on him. We will give him all the support in this and it is up to him.
"On loan is good for everyone to see whether he is happy with this club and whether the club is happy with him after this few months.
"He has to settle, we will give him all the time to do that and get used to a very demanding league.
"When he was a promising youngster it was nice to see a very stylish player and then he had a few years in Milan.
"After he did not make a big next step in Europe, he went back to Brazil so now he thinks he has another chance to make a step in Europe which is a brave step, but it is up to him and we will help him to get fit and see what he can bring to this club.
"He [Matt Miazga] will be one of the squad members for the rest of the season, a young guy stepping up to the national team, and if you have young players you can see what they are capable of in training."